The Experts below are selected from a list of 18876 Experts worldwide ranked by ideXlab platform
Jinkai Yan - One of the best experts on this subject based on the ideXlab platform.
-
dynamic globularization and Restoration Mechanism of ti 5al 2sn 2zr 4mo 4cr alloy during isothermal compression
Journal of Alloys and Compounds, 2015Co-Authors: Jun Luo, Jinkai YanAbstract:Abstract Dynamic globularization and Restoration Mechanism of Ti–5Al–2Sn–2Zr–4Mo–4Cr alloy during isothermal compression were investigated by employing a high-resolution electron backscatter diffraction technique (EBSD). Quantitative analysis was made in detail for further understanding the microstructure evolution. The results reveal that the dynamic globularization of primary α grains of Ti–5Al–2Sn–2Zr–4Mo–4Cr alloy is accomplished by the formation of high-angle boundaries (HABs) and the penetration of the β phase during isothermal compression, and an increase in deformation temperature leads to a more globular microstructure. The main Restoration Mechanism in the β phase of Ti–5Al–2Sn–2Zr–4Mo–4Cr alloy during isothermal compression is dynamic recovery (DRC) at a strain rate of 0.01 s−1, while continuous dynamic recrystallization (CDRX) occurs as the strain rate increases to 1.0 s−1/5.0 s−1 and the α grains play an important role in recrystallization. The recrystallization in the β phase of Ti–5Al–2Sn–2Zr–4Mo–4Cr alloy during isothermal compression is promoted with the decreasing of deformation temperature and the increasing of strain rate. A strong 〈0 0 1〉 fiber texture develops where only DRC occurs and the deformation texture is weakened to a large extent after recrystallization of Ti–5Al–2Sn–2Zr–4Mo–4Cr alloy during isothermal compression.
-
Dynamic globularization and Restoration Mechanism of Ti–5Al–2Sn–2Zr–4Mo–4Cr alloy during isothermal compression
Journal of Alloys and Compounds, 2015Co-Authors: Jun Luo, Jinkai YanAbstract:Abstract Dynamic globularization and Restoration Mechanism of Ti–5Al–2Sn–2Zr–4Mo–4Cr alloy during isothermal compression were investigated by employing a high-resolution electron backscatter diffraction technique (EBSD). Quantitative analysis was made in detail for further understanding the microstructure evolution. The results reveal that the dynamic globularization of primary α grains of Ti–5Al–2Sn–2Zr–4Mo–4Cr alloy is accomplished by the formation of high-angle boundaries (HABs) and the penetration of the β phase during isothermal compression, and an increase in deformation temperature leads to a more globular microstructure. The main Restoration Mechanism in the β phase of Ti–5Al–2Sn–2Zr–4Mo–4Cr alloy during isothermal compression is dynamic recovery (DRC) at a strain rate of 0.01 s−1, while continuous dynamic recrystallization (CDRX) occurs as the strain rate increases to 1.0 s−1/5.0 s−1 and the α grains play an important role in recrystallization. The recrystallization in the β phase of Ti–5Al–2Sn–2Zr–4Mo–4Cr alloy during isothermal compression is promoted with the decreasing of deformation temperature and the increasing of strain rate. A strong 〈0 0 1〉 fiber texture develops where only DRC occurs and the deformation texture is weakened to a large extent after recrystallization of Ti–5Al–2Sn–2Zr–4Mo–4Cr alloy during isothermal compression.
Jun Luo - One of the best experts on this subject based on the ideXlab platform.
-
dynamic globularization and Restoration Mechanism of ti 5al 2sn 2zr 4mo 4cr alloy during isothermal compression
Journal of Alloys and Compounds, 2015Co-Authors: Jun Luo, Jinkai YanAbstract:Abstract Dynamic globularization and Restoration Mechanism of Ti–5Al–2Sn–2Zr–4Mo–4Cr alloy during isothermal compression were investigated by employing a high-resolution electron backscatter diffraction technique (EBSD). Quantitative analysis was made in detail for further understanding the microstructure evolution. The results reveal that the dynamic globularization of primary α grains of Ti–5Al–2Sn–2Zr–4Mo–4Cr alloy is accomplished by the formation of high-angle boundaries (HABs) and the penetration of the β phase during isothermal compression, and an increase in deformation temperature leads to a more globular microstructure. The main Restoration Mechanism in the β phase of Ti–5Al–2Sn–2Zr–4Mo–4Cr alloy during isothermal compression is dynamic recovery (DRC) at a strain rate of 0.01 s−1, while continuous dynamic recrystallization (CDRX) occurs as the strain rate increases to 1.0 s−1/5.0 s−1 and the α grains play an important role in recrystallization. The recrystallization in the β phase of Ti–5Al–2Sn–2Zr–4Mo–4Cr alloy during isothermal compression is promoted with the decreasing of deformation temperature and the increasing of strain rate. A strong 〈0 0 1〉 fiber texture develops where only DRC occurs and the deformation texture is weakened to a large extent after recrystallization of Ti–5Al–2Sn–2Zr–4Mo–4Cr alloy during isothermal compression.
-
Dynamic globularization and Restoration Mechanism of Ti–5Al–2Sn–2Zr–4Mo–4Cr alloy during isothermal compression
Journal of Alloys and Compounds, 2015Co-Authors: Jun Luo, Jinkai YanAbstract:Abstract Dynamic globularization and Restoration Mechanism of Ti–5Al–2Sn–2Zr–4Mo–4Cr alloy during isothermal compression were investigated by employing a high-resolution electron backscatter diffraction technique (EBSD). Quantitative analysis was made in detail for further understanding the microstructure evolution. The results reveal that the dynamic globularization of primary α grains of Ti–5Al–2Sn–2Zr–4Mo–4Cr alloy is accomplished by the formation of high-angle boundaries (HABs) and the penetration of the β phase during isothermal compression, and an increase in deformation temperature leads to a more globular microstructure. The main Restoration Mechanism in the β phase of Ti–5Al–2Sn–2Zr–4Mo–4Cr alloy during isothermal compression is dynamic recovery (DRC) at a strain rate of 0.01 s−1, while continuous dynamic recrystallization (CDRX) occurs as the strain rate increases to 1.0 s−1/5.0 s−1 and the α grains play an important role in recrystallization. The recrystallization in the β phase of Ti–5Al–2Sn–2Zr–4Mo–4Cr alloy during isothermal compression is promoted with the decreasing of deformation temperature and the increasing of strain rate. A strong 〈0 0 1〉 fiber texture develops where only DRC occurs and the deformation texture is weakened to a large extent after recrystallization of Ti–5Al–2Sn–2Zr–4Mo–4Cr alloy during isothermal compression.
H. B. Mcshane - One of the best experts on this subject based on the ideXlab platform.
-
Isothermal hot deformation behaviour of metastable β titanium alloy Ti-10V-2Fe-3AI
Materials Science and Technology, 1997Co-Authors: David Robertson, H. B. McshaneAbstract:AbstractElevated temperature true stress-true strain curves have been determined for the isothermal deformation of the metastable β titanium alloy Ti-10V-2Fe-3Al in both the β and (α + β) phase fields using hot compression testing. The flow stress behaviour of the alloy, in two initial microstructural conditions, has been correlated with the microstructural changes taking place during hot deformation. The shape of the isothermal hot deformation stress-strain curve is strongly dependent upon the starting microstructure of the material. The operative Restoration Mechanism during deformation in the β field isdynamic recovery since β subgrains are readily observed in the as β forged condition. Dynamic recovery of the β phase is also considered to be the dominant Restoration Mechanism for both microstructural conditions during deformation at temperatures high in the (α + β) field.
Chaoju Hou - One of the best experts on this subject based on the ideXlab platform.
-
design of a fast Restoration Mechanism for virtual path based atm networks
International Conference on Computer Communications, 1997Co-Authors: Chaoju HouAbstract:In this paper, we propose a fast Restoration Mechanism for virtual path-based ATM networks. Given an ATM network topology, the capacity of each physical link, and the primary virtual path (VP) layout at system initialization, the proposed Mechanism pre-assigns to each primary VP one backup VP such that (P1) the failure of a single node/link does not lead to the failure of both the primary and backup VPs, (P2) the alternate backup VP is routed on a path with the shortest hop count among all possible paths with sufficient bandwidth between the two VP terminators, and (P3) the maximum link load is minimized. During system operation, if a physical node/link fails, the proposed Mechanism restores the VPs that traverse the failed node/link simply by redirecting cells on the failed VPs to their corresponding backup VPs. Moreover, the proposed Mechanism also locates (i) new VPs for injured backup VPs that traverse the failed node/link, and (ii) second-generation backup VPs for newly-activated backup VPs that replace their corresponding failed primary VPs, both in a decentralized manner. We elaborate on all the component algorithms, and discuss how to configure the functionalities as software daemons that reside at each network node. The proposed Mechanism is shown via event-driven simulation to be practically feasible in fast restoring failed VPs in a cost effective manner.
-
INFOCOM - Design of a fast Restoration Mechanism for virtual path-based ATM networks
Proceedings of INFOCOM '97, 1Co-Authors: Chaoju HouAbstract:In this paper, we propose a fast Restoration Mechanism for virtual path-based ATM networks. Given an ATM network topology, the capacity of each physical link, and the primary virtual path (VP) layout at system initialization, the proposed Mechanism pre-assigns to each primary VP one backup VP such that (P1) the failure of a single node/link does not lead to the failure of both the primary and backup VPs, (P2) the alternate backup VP is routed on a path with the shortest hop count among all possible paths with sufficient bandwidth between the two VP terminators, and (P3) the maximum link load is minimized. During system operation, if a physical node/link fails, the proposed Mechanism restores the VPs that traverse the failed node/link simply by redirecting cells on the failed VPs to their corresponding backup VPs. Moreover, the proposed Mechanism also locates (i) new VPs for injured backup VPs that traverse the failed node/link, and (ii) second-generation backup VPs for newly-activated backup VPs that replace their corresponding failed primary VPs, both in a decentralized manner. We elaborate on all the component algorithms, and discuss how to configure the functionalities as software daemons that reside at each network node. The proposed Mechanism is shown via event-driven simulation to be practically feasible in fast restoring failed VPs in a cost effective manner.
Hussein T. Mouftah - One of the best experts on this subject based on the ideXlab platform.
-
A QoS-Based Restoration Mechanism for OBS Networks
2006 International Conference on Transparent Optical Networks, 2006Co-Authors: S. Said, Hussein T. Mouftah, Halima ElbiazeAbstract:QoS support and network survivability are crucial issues in optical burst switched (OBS) networks to form a smooth transition toward next generation optical Internet. This paper presents a QoS-based Restoration Mechanism for OBS networks based on offset time extensions. Simulation studies verified the role of the offset time in the Restoration Mechanism and its attitudinal character to define QoS levels.
-
a bi initiation based path Restoration Mechanism for wavelength routed wdm networks
International Conference on Communications, 2003Co-Authors: Jun Zheng, Hussein T. MouftahAbstract:This paper proposes a bi-initiation-based path Restoration Mechanism for surviving single-link failures in wavelength-routed WDM networks. This Mechanism allows the source node and the destination node of a broken con-nection to respectively initiate a path Restoration process in the event of a link failure and uses the destination node to coordinate between the two processes. The purpose is to reduce the path Restoration time so that a backup path can be provisioned faster for each broken connection that traverses the failed link. Based on this Mechanism, a fast path Restoration protocol is also presented and its performance is evaluated through simulation experiments.
-
HSNMC - A Bi-initiation-Based Path Restoration Mechanism for Wavelength-Routed WDM Networks
Lecture Notes in Computer Science, 2003Co-Authors: Jun Zheng, Hussein T. MouftahAbstract:This paper proposes a bi-initiation-based path Restoration Mechanism for surviving single-link failures in wavelength-routed WDM networks. This Mechanism allows the source node and the destination node of a broken con-nection to respectively initiate a path Restoration process in the event of a link failure and uses the destination node to coordinate between the two processes. The purpose is to reduce the path Restoration time so that a backup path can be provisioned faster for each broken connection that traverses the failed link. Based on this Mechanism, a fast path Restoration protocol is also presented and its performance is evaluated through simulation experiments.
